docs: def start():
          action_set('meta.start', time.strftime('%Y-%m-%dT%H:%M:%SZ'))
  
          """
          If the collectd charm is also installed, tell it to send a snapshot
          of the current profile data.
          """
          COLLECT_PROFILE_DATA = '/usr/local/bin/collect-profile-data'
          if os.path.exists(COLLECT_PROFILE_DATA):
              subprocess.check_output([COLLECT_PROFILE_DATA])